SECTION 8.4
643
Anno ta tions
KEY
TYPE
VALUE
RI
stream
(Optional; pushbutton fields only; must be an indirect reference)
A form XObject
defining the widget annotation’s
rollover icon,
displayed when the user rolls the
cursor into its active area without pressing the mouse button.
(Optional; pushbutton fields only; must be an indirect reference)
A form XObject
defining the widget annotation’s
alternate (down) icon,
displayed when the
mouse button is pressed within its active area.
(Optional; pushbutton fields only)
An icon fit dictionary (see Table 8.97 on page
rectangle. If present, the icon fit dictionary applies to all of the annotation’s icons
(normal, rollover, and alternate).
(Optional; pushbutton fields only)
A code indicating where to position the text of
the widget annotation’s caption relative to its icon:
0
1
2
3
4
5
6
No icon; caption only
No caption; icon only
Caption below the icon
Caption above the icon
Caption to the right of the icon
Caption to the left of the icon
Caption overlaid directly on the icon
IX
stream
IF
dictionary
TP
integer
Default value: 0.
Printer’s Mark Annotations
A
printer’s mark annotation (PDF 1.4)
represents a graphic symbol, such as a
registration target, color bar, or cut mark, added to a page to assist production
personnel in identifying components of a multiple-plate job and maintaining
consistent output during production. See Section 10.10.2, “Printer’s Marks,” for
further discussion.
Trap Network Annotations
A
trap network annotation (PDF 1.3)
defines the trapping characteristics for a
page of a PDF document. (Trapping is the process of adding marks to a page
along color boundaries to avoid unwanted visual artifacts resulting from mis-
registration of colorants when the page is printed.) A page may have at most one